ASUS X540MAR BIOS for board revision 3.1, marked ORG, which most likely means an original dump read from a working unit. The RAR is about 5.9 MB in size. The image is written with an external SPI programmer to restore a laptop that shows no display or does not POST after firmware corruption. Confirm the model and revision printed on the mainboard, save a copy of the existing chip contents before erasing, and check that the extracted image matches the capacity of the flash chip.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @biosarchive. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →